<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			*{
				margin: 0;
				padding: 0;
			}
			img {
				width: 150px;
				height: 130px;
			}
			.box{
				/* 水平居中 */
				text-align: center;
				padding-top: 30px;
				padding-bottom: 30px;
				background-color: rgba(97,131,174,0.6);
			}
			body{
				background-image: url(../img/1.jpg);
			}
			
		</style>
	</head>
	<!-- style="background-image: ;" -->
	<body style="">
		<div class="box">
			<img src="../img/1.jpg" />
			<img src="../img/2.jpg" />
			<img src="../img/3.jpg" />
			<img src="../img/4.jpg" />
			<img src="../img/5.jpg" />
		</div>
		
		<script type="text/javascript">
			window.onload = function() {
				var images = document.getElementsByTagName('img');
				for (var i = 0; i < images.length; i++) {
					images[i].onclick = function() {
						// this代表当前设置点击事件的对象
						var imageSrc = this.src;
						/* document.body.style.backgroundImage = 'url(../img/2.jpg)'; */
						document.body.style.backgroundImage = 'url('+imageSrc+')';
					}
				}
			}
		</script>
	</body>
</html>
